Just what the title says really.
He appears totally fine. Has a pretty full-on work schedule from school i.e. properly working at a desk from 8:30 to 3:30 with just an hour for lunch. We all go out on our bikes for an hour most days. Has 2 music lessons a week online. Normally all watch some TV together every evening. My point being, he is definitely "busy".
I'm not really worried about him - but should I be worried that he doesn't want to socialise at all?!
My 10 year old daughter is having very frequent Facetimes etc. with friends and the difference between them is stark! Is this just a stereotypical boys v girls thing though?!